電流模式降壓型dcdc轉(zhuǎn)換器的設(shè)計(jì)

1、四川大學(xué)碩士學(xué)位論文電流模式降壓型DCDC轉(zhuǎn)換器的設(shè)計(jì)姓名：毛振峰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：微電子學(xué)與固體電子學(xué)指導(dǎo)教師：王國(guó)裕20060510四川大學(xué)碩士學(xué)位論文_—______——__—————————————————————————————————————一————————————————————————————————————————————一ACurrent—control—modeStepDownDC—DCConverterM

2、ajor：MicroeleetronicsandSolidStateElectronicsStudentMaoZhenfengAdviserWangguoyuAstep—dovmDC—DCconverterisanalyzedanddesignedIthasfeaturesthatsupplyvoltagecanchangefromDC5VtODC25vyieldsoutlputDCcurrentupto2Aandtheout—putv

3、oltageisprogrammablethatdependsontheout—putresistorsItsoscillatorfrequencyiS400KHzTheDC—DCconvenerhasbeendesignedwithintegratedpowerswitchtransistorsandsynchronouspowertransistorsiasideThereforeitisverycoDveniantforcusto

4、mersbecauseonlyafeWoutsidedevicesareneedadwhentheconverterisusedTheconverterhasahi曲ynamicrespondingspeed，averysmalloverrangevoltageandovevrangecurrentwhenthechipispoweredupFirstlythedifierentcontrolmodesofmonolithicswitc

5、hpowerconvenerwereintroducedandthecurrent—contr01modeandvoltagecontrol—modewerecomparedinthispaperAcurrentcontr01modehasbeenselectedtobuildtheconverterduetothedesignspecificationThenthectripbased012theprocessmodule，espec

6、iallythecurrentfeedback1009，loopcompensation，erroramplifierandbandgapcircuitsWasanalyzedanddesignedSomeunitsoftheoriginalcircuitsweremodifiedtOfitthefabricationprocessTheIayoutdesignwasdiscussedafterthecircuitsdesignFina

7、llythewholecircuitandlayoutweresimulatedbasedonthe8uBiCMOSmodulewithditl、erenlsupplyvoltage，differentenvironmenttemperatureTheresistancechangecomingfromtheprocesshasalsobeenconsideredinthedesignThesimulatiOilcircumstance